1. 4G and 5G: Present and Future of Mobile Network
Shariful Islam
Std#

2. Define a generation a change in the fundamental nature of the service
9/17/2018
Define a generation
a change in the fundamental nature of the service
non-backwards-compatible transmission technology
higher peak bit rates
new frequency bands
wider channel frequency bandwidth in Hertz
higher capacity for many simultaneous data transfers
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9/17/2018

3. Define a generation
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4. 9/17/2018
IMT-Advanced
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5. IMT-Advanced
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6. 4G No circuit switching. Only packet switching. Stablished standards
LTE Advanced
WirelessMAN-Advanced
Close contender with commercial 4G tag.
Long Term Evolution
Mobile WiMAX
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7. 4g
Physical layer transmission techniques are MIMO, OFDMA, Turbo principle error-correcting codes.
Channel-dependent scheduling: To use the time- varying channel
Link adaptation: Adaptive modulation and error- correcting codes
Mobile IP utilized for mobility
IP-based femtocells
home nodes connected to fixed Internet broadband infrastructure
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8. Femtocell
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9. LTE Advanced 100 Mbit/s in the downlink 50 Mbit/s in the uplink
20 MHz channel
MIMO increases its capability
High Speed OFDM Packet Access
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10. LTE Advanced Scalable system bandwidth exceeding 20 MHz, up to 100 MHz
Local area optimization of air interface
Local Area network and mobility solutions
Enhanced precoding and forward error correction
UL/DL inter eNB coordinated MIMO
heterogeneous networks with a mix of macrocells with low power nodes such as picocells, femtocells and new relay nodes.
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11. LTE Advanced
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12. MiMo
a method for multiplying the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation.
a practical technique for sending and receiving more than one data signal on the same radio channel at the same time via multipath propagation.
a transmitter sends multiple streams by multiple transmit antennas. The transmit streams go through a matrix channel
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9/17/2018

13. OFDM
a method of encoding digital data on multiple carrier frequencies.
a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method.
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9/17/2018

14. OFDM advantages disadvantages
Robust against intersymbol interference (ISI) and fading caused by multipath propagation.
Efficient implementation using Fast Fourier Transform (FFT).
Low sensitivity to time synchronization errors.
Sensitive to Doppler shift.
High peak-to-average-power ratio (PAPR), requiring linear transmitter circuitry, which suffers from poor power efficiency.
Loss of efficiency caused by cyclic prefix/guard interval.
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9/17/2018

15. WiMAX
Also called IEEE
a series of wireless broadband standards written by IEEE.
supporting channel bandwidths of between 1.25 MHz and 20 MHz, with up to subcarriers.
Provides MIMO support
A key feature of is that it is a connection-oriented technology.
The subscriber station (SS) cannot transmit data until it has been allocated a channel by the base station (BS). This allows e to provide strong support for quality of service (QoS).
In e, there are 5 QoS classes:
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9/17/2018

16. WiMAX Service Abbrev Definition Typical Applications
Unsolicited Grant Service
UGS
Real-time data streams comprising fixed-size data packets issued at periodic intervals
T1/E1 transport
Extended Real-time Polling Service
ertPS
Real-time service flows that generate variable-sized data packets on a periodic basis
VoIP
Real-time Polling Service
rtPS
Real-time data streams comprising variable-sized data packets that are issued at periodic intervals
MPEG Video
Non-real-time Polling Service
nrtPS
Delay-tolerant data streams comprising variable-sized data packets for which a minimum data rate is required
FTP with guaranteed minimum throughput
Best Effort BE
Data streams for which no minimum service level is required and therefore may be handled on a space-available basis
HTTP
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17. WiMAX
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18. 4g architecture
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19. Beyond 4G research
4G systems is to make the high bit rates available in a larger portion of the cell, especially to users in an exposed position in between several base stations.
Pervasive networks are an amorphous and at present entirely hypothetical concept where the user can be simultaneously connected to several wireless access technologies and can seamlessly move between them
efficiently manage spectrum use and transmission power as well as the use of mesh routing protocols to create a pervasive network.
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9/17/2018

20. 5g
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21. Next Generation Mobile Networks
Data rates of several tens of megabits per second should be supported for tens of thousands of users
1 gigabit per second to be offered simultaneously to many workers on the same office floor
Several hundreds of thousands of simultaneous connections to be supported for massive sensor deployments
Spectral efficiency should be significantly enhanced compared to 4G
Coverage should be improved
Signaling efficiency should be enhanced
Latency should be reduced significantly compared to LTE
Shariful Islam
9/17/2018

22. Shariful Islam
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23. Debate about 5g
A super-efficient mobile network that delivers a better performing network for lower investment cost.
A super-fast mobile network comprising the next generation of small cells densely clustered to give a contiguous coverage over at least urban areas
A converged fiber-wireless network It would be more a “nomadic” service (like Wi-Fi) rather than a wide-area “mobile” service.
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24. research Radio propagation measurements and channel models
Massive Distributed MIMO providing green flexible small cells
Advanced interference and mobility management
Efficient support of machine-type devices to enable the Internet of Things
Multiple-hop networks: A major issue in systems beyond 4G is to make the high bit rates available in a larger portion of the cell
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25. research
Wireless network virtualization: network infrastructure can be decoupled from the services that it provides
Cognitive radio technology, also known as smart radio
Dynamic Adhoc Wireless Networks
IPv6, where a visiting care-of mobile IP address is assigned according to location and connected network
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26. Research Wearable devices with AI capabilities
Li-Fi is a massive MIMO visible light communication network to advance 5G
Worldwide wireless web (WWWW), i.e. comprehensive wireless-based web applications
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27. Shariful Islam
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